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Finding the Fourth Proportional to 120,614.58, 166,468.05 and 66,916.89

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Solution

The fourth proportional to 120,614.58, 166,468.05 and 66,916.89 is: 92,356.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,614.58 : 166,468.05 = 66,916.89 : x
  2. Step 2: Convert to fraction form
    120,614.58/166,468.05 = 66,916.89/x
  3. Step 3: Cross multiply
    120,614.58x = 166,468.05 × 66,916.89
  4. Step 4: Simplify right side
    120,614.58x = 11,139,523,855.78
  5. Step 5: Solve for x
    x = 11,139,523,855.78/120,614.58
  6. Step 6: Final answer
    x = 92,356.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.